How to remove the stuck door latch?

Question

Hi all,

I would like your urgent help to remove the stuck door latch of a bedroom door. We have a Bunnings Ikonic Brushed Nickel Norr Passage Lever set.

It is only a few years old. Last night when turn the door lever, the door didn't open and the latch doesn't retract. I removed the handle, rose and spindle and tried a few methods, but nothing work. I have looked up on Youtube to get help. I have spent a few hours already trying different methods, but nothing work.

See attached pictures.

I would really like help.

Thanks,

Amy

Stuck latch, the handle no longer able to turn and open the door.Ikonic Brushed Nickel Norr Passage Lever
The spindle is turning without any problemThe direct view of the spindle